<template>
    <view class="container">
        <view class="header">
            <view class="search">
                <u-search placeholder="请输入产品" v-model="keyword" :showAction="false" bgColor="#f7f8fa"
                    @search="search"></u-search>
            </view>
        </view>

        <scroll-view v-if="list.length > 0" class="list" :scroll-y="true" :scroll-top="top"
            :refresher-triggered="triggered" :refresher-enabled="true" :lower-threshold="100"
            @refresherrefresh="onRefresh" @scrolltolower="onBottom" @scroll="onScroll" :style="{ height: `${height}px` }">
            <navigator :url="`/pages/validate/info?code=${item.query_code}`" class="item" v-for="(item, key) in list"
                :key="key">
                <view class="title">{{ item.products.name }}</view>

                <view class="line"></view>

                <view class="son-list">
                    <view class="son-item">
                        <view class="name">
                            查询次数：
                        </view>
                        <view class="value">{{ item.query_num }}</view>
                    </view>

                    <view class="son-item">
                        <view class="name">
                            您查询的防伪码：
                        </view>
                        <view class="value">{{ item.query_code }}</view>
                    </view>

                    <view class="son-item">
                        <view class="name">
                            首次查询时间：
                        </view>
                        <view class="value">{{ item.query_time_text }}</view>
                    </view>

                    <view class="son-item">
                        <view class="name">
                            小程序码：
                        </view>
                        <view class="value">
                            <image src="/static/images/code.png" />
                        </view>
                    </view>
                </view>
            </navigator>

            <u-loadmore :status="status" marginBottom="40" fontSize="20" lineColor="#1CD29B" dashed line />
        </scroll-view>

        <!-- 提醒组件 -->
        <u-toast ref="notice" />

        <!-- 返回顶部 -->
        <u-back-top :scroll-top="top" @click="BackTop"></u-back-top>
    </view>
</template>
<script>
export default {
    onShow() {
        //获取本地存储
        var business = uni.getStorageSync('business') ? uni.getStorageSync('business') : {}

        // 判断对象是否为空
        if (Object.getOwnPropertyNames(business).length > 0) {
            this.business = business
            this.onRefresh()
        } else {
            //没有登录
            uni.$u.route({
                type: 'reLaunch',
                url: '/pages/validate/validate'
            })
            return false
        }
    },
    onReady() {
        //调用uni接口 获取页面的高度
        uni.getSystemInfo({
            success: (res) => {
                this.height = res.windowHeight
            }
        })
    },
    data() {
        return {
            triggered: false,// 下拉刷新状态
            Isfreshing: false, //防止重复刷新
            list: [],
            page: 1,
            business: {},
            status: 'loadmore',
            keyword: '',
            height: 0, //页面高度
            top: 0,
        }
    },
    methods: {
        search() {
            this.onRefresh()
        },
        BackTop() //返回顶部
        {
            this.top = 0
        },
        onScroll(e) //监听页面滚动
        {
            this.top = e.detail.scrollTop
        },
        onRefresh() //下拉刷新
        {
            //防止重复下拉刷新
            if (this.Isfreshing) return;

            //执行一次下拉刷新
            this.Isfreshing = true

            //判断是否处于下拉刷新中
            if (!this.triggered) this.triggered = true //正在下拉刷新中

            this.page = 1
            this.list = []

            //请求数据
            this.ProductData()
        },
        onBottom() //上拉加载
        {
            this.ProductData()
        },
        async ProductData() //数据请求
        {
            var params = {
                busid: this.business.id,
                page: this.page,
                keyword: this.keyword
            }

            //请求中
            var result = await uni.$u.http.post('/business/product', params)

            if (this.triggered) this.triggered = false
            if (this.Isfreshing) this.Isfreshing = false
            this.status = 'loadmore'

            if (result.code == 0) {
                //没有更多数据
                this.status = 'nomore'
                return false
            }

            this.list = this.list.concat(result.data)
            this.page++
        }
    }
}
</script>

<style>
page {
    background-color: #eee;
}

.container {
    width: 95%;
    margin: 0 auto;
    padding-bottom: 20px;
}

.header {
    background-color: #fff;
    padding: 10px 0;
    margin-top: 10px;
    border-radius: 10px;
}

.header .search {
    width: 95%;
    margin: 0 auto;
}

.item {
    background: #fff;
    border-radius: 10px;
    overflow: hidden;
    margin-top: 10px;
    padding: 0 10px 10px;
}

.item .title {
    padding: 10px 0 10px 10px;
    font-size: 20px;
}

.item .line {
    width: 100%;
    height: 1px;
    background: #ebebeb;
    margin: 0 auto;
    margin-bottom: 10px;
}

.item .son-list .son-item {
    display: flex;
    justify-content: space-between;
    font-size: 14px;
    margin-bottom: 10px;
}

.item .son-list .son-item .name {
    color: #9b9b9a;
}

.item .son-list .son-item image {
    width: 30px;
    height: 30px;
}
</style>